New Zealand actor Sam Neill recounts the moment he found out about the Christchurch mosque shootings, while in a taxi driven by a Muslim driver, saying he was in "floods of tears". Rough cut (no reporter narration)

The American actor says being the star of the show is "crazy, super surreal, nutty stuff", as he plays a boy turned adult superhero in DC Universe's new action comedy. Rough cut (no reporter narration).

After cows were found to be producing tainted milk on a small farm in Maine, authorities attributed the discovery of toxic chemicals to a common fertilizer - biosolids, or nutrient-rich sewage from municipal utilities. And health experts worry the contamination could signal far broader problems on farms nationwide.

A quiet revolution has taken place in the Oresund Strait between Sweden and Denmark where two of the world's largest battery-powered ferries ply the waters after being converted from polluting diesel power. Stuart McDill reports.

Serbia faces a steep challenge to bring its environmental procedures and greenhouse gas emissions to the standards required to join the European Union. It's a task estimated to cost around 15 billion euros ($17 billion).

Environmentally-conscious residents in California can make an extra contribution to improving air quality by installing roofing shingles loaded with smog-absorbing granules that take pollution out of the air and convert it into water, according to the company that makes them. Francesca Lynagh reports.